Ammonium Removal from Synthetic Stormwater using Clinoptilolite and Hydroaluminosilicate Columns
Ammonium can enter stormwater control measures (SCMs) with the influent, but is also the intermediate product between organic nitrogen and nitrate, and it is important to retain and treat ammonium within the SCM. In this study the use of aluminosilicate aggregates (CA) and clinoptilolite zeolite (...
| Publié dans: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 89(2017), 6 vom: 01. Juni, Seite 564-575 |
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| Auteur principal: | |
| Autres auteurs: | |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2017
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| Accès à la collection: | Water environment research : a research publication of the Water Environment Federation |
| Sujets: | Journal Article Aluminum Silicates Ammonium Compounds Water Pollutants, Chemical clinoptilolite 12173-10-3 Zeolites 1318-02-1 aluminosilicate 1U9X05245H |
| Résumé: | Ammonium can enter stormwater control measures (SCMs) with the influent, but is also the intermediate product between organic nitrogen and nitrate, and it is important to retain and treat ammonium within the SCM. In this study the use of aluminosilicate aggregates (CA) and clinoptilolite zeolite (ZT) was investigated under SCM (column) conditions. ZT was found to have the highest capacity (0.45 mg <inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00564-ilm01.gif"/>-N/g ZT vis-à-vis 0.33 mg <inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00564-ilm12.gif"/>-N/g CA) at 2.5 mg NH4-N/L. The presence of Ca2+ and K+ was found to reduce the capacity of the media significantly. Increasing the contact time from 10 minutes to 47 minutes enhanced the removal efficiency of the system by 70% for CA and 23% for ZT, respectively. Finally, changes in the influent ammonium concentration resulted in successful removal during concentration increases, but desorption of ammonium for sudden concentration reduction. The use of ZT in media-based SCMs is recommended for ammonium removal |
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| Description: | Date Completed 26.07.2017 Date Revised 26.07.2017 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1554-7531 |
| DOI: | 10.2175/106143017X14902968254467 |